Daniel Archambault Tamara Munzner David Auber Grouse: Feature-Based, Steerable Graph Hierarchy Exploration. 67-74 2007 conf/vissym/2007 EuroVis http://dx.doi.org/10.2312/VisSym/EuroVis07/067-074 db/conf/vissym/eurovis2007.html#ArchambaultMA07